What materials should be avoided in heating oil tank construction?

The correct choice reflects the necessity for using materials in heating oil tank construction that do not degrade or corrode over time due to exposure to heating oil and its environmental conditions. Untreated wood and materials susceptible to corrosion are particularly problematic because they can deteriorate, leading to leaks or contamination of the surrounding soil and groundwater.

Untreated wood can absorb moisture, which can foster decay and biological growth, and over time, this can compromise the structural integrity of the tank. Additionally, materials that are prone to rust and corrosion can weaken the tank, ultimately resulting in failure. Using resistant materials is crucial for ensuring the longevity and safety of heating oil tanks, which must withstand specific environmental elements and chemical interactions.

In contrast, stainless steel, treated wood, and rust-resistant metals are typically more durable and are designed to withstand the chemical properties of heating oil without significant degradation, making them suitable choices for tank construction.